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30984 (1995 SW19)
Classification: Outer Main-belt Asteroid          SPK-ID: 2030984
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1448779568998995 3.9478e-08  
a 3.205467439399581 1.8185e-08 au
q 2.741065865870217 1.2812e-07 au
i 1.041228771839252 4.3853e-06 deg
node 42.04582710385647 0.0002268 deg
peri 106.8116612620222 0.00022724 deg
M 26.12352706242321 1.3931e-05 deg
tp 2459048.387538753057
(2020-Jul-17.88753875)
8.0811e-05 TDB
period 2096.213345083423
5.74
1.7838e-05
4.884e-08
d
yr
n .1717382445085393 1.4614e-09 deg/d
Q 3.669869012928944 2.082e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1142  
   data-arc span      9318 days (25.51 yr)  
   first obs. used      1995-09-18  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54746  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 04:33:05  

Additional Information
 Earth MOID = 1.75252 au 
 Jupiter MOID = 1.33226 au 
 T_jup = 3.176 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.27   n/a MPCxxxxx  
diameter diameter 8.456 km 0.121 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.057   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

30984 (1995 SW19)          Discovered 1995-Sep-18 by Spacewatch at Kitt Peak
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1995 SW19 = 1998 HM39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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